Combined cylinder gasket

Abstract

The utility model provides a combined cylinder gasket which comprises a cylinder gasket body, an air sealing piece and an oil-water sealing piece, the air sealing piece and the oil-water sealing piece are fixed on the cylinder gasket body, a plurality of cylinder holes are formed in the cylinder gasket body, and the air sealing piece is arranged around the cylinder holes and used for sealing gaps between the cylinder holes and external parts. A plurality of bolt holes, water holes and oil holes are formed in the cylinder gasket body, the oil-water sealing pieces are fixed to the bolt holes, the water holes and the oil holes and used for sealing gaps between the bolt holes, the water holes and the oil holes and external parts, the cylinder gasket body is a single-layer metal plate, and the air-tight sealing piece is a multi-layer metal plate. The metal single-layer plate is adopted on the cylinder head gasket body bearing small pressure and low heat, so that the strength of the body can be effectively improved, and the production cost is reduced; and the air-tight sealing piece which bears larger pressure and higher heat is made of a plurality of layers of metal plates, so that a separation gap caused by detonation pressure can be compensated, and the sealing reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a combined cylinder gasket. Background Art

[0002] The cylinder gasket, also known as the cylinder liner, is located between the cylinder head and the cylinder block. Its function is to fill the microscopic gap between the cylinder block and the cylinder head to ensure good sealing at the joint surface, thereby ensuring the sealing of the combustion chamber and preventing cylinder leakage and water jacket leakage. The cylinder gasket is a component that has a relatively large impact on the performance of the engine. It was originally made of asbestos material, but with the introduction of relevant national laws and regulations and the improvement of engine performance, asbestos gaskets gradually began to fail to meet the use requirements of the engine, and were replaced by metal cylinder gaskets.

[0003] For example, patent CN 202082002 U provides a diesel engine single-layer plate cylinder gasket, including a cylinder gasket body, a cylinder port, a water and oil hole and a bolt hole are arranged on the cylinder gasket body, the cylinder gasket body is made of a single-layer iron plate, a cylinder port sealing rib is stamped around the cylinder port, and a sealing rubber ring is arranged on the cylinder gasket body at the water and oil hole. Since the cylinder gasket body is made of a single-layer iron plate, the design defects of multi-layer metal cylinder gaskets are avoided and the manufacturing cost is reduced; the sealing rubber ring replaces the traditional sealing rib to seal the cooling water and lubricating oil, the sealing effect is good, and water and oil leakage faults can be avoided. Another example is a multi-cylinder single-layer metal cylinder gasket with a multi-element sealing structure provided by patent CN 203560435U, which has a gasket body, grooves are respectively provided at both ends of the gasket body, cylinder holes are distributed on the gasket body, end positioning holes, water holes, and mounting holes are distributed on the outer periphery of the cylinder hole, sealing ribs and sealing grooves are distributed on the edge of the cylinder hole, a silicone rubber sealing layer is coated on the sealing ribs, a rubber layer is coated on the gasket body, a nylon plastic layer is coated on the gasket body between the mounting hole and the cylinder hole, and threaded holes are also distributed at the four corners of the gasket body. The utility model can facilitate the processing of the gasket body, reduce the production cost, and at the same time, the entire gasket is sealed to a certain extent through the structure of the rubber layer and the nylon plastic layer, thereby enhancing the local sealing performance. Through the structure of the threaded hole and the end positioning hole, its installation and positioning stability performance is good.

[0004] It can be seen that in the prior art, most metal cylinder gaskets use single-layer metal gaskets for sealing. The processing technology of single-layer metal gaskets is simple and the cost is low. However, the single-layer metal gasket gas seal uses a single-layer metal pressure wave. Under high explosion pressure and high heat load conditions, the rebound compensation of the single-layer pressure wave structure is weak, which is easy to cause sealing failure. Utility Model Content

[0005] In view of this, it is necessary to provide a combined cylinder gasket to solve the problem that the existing cylinder gasket is prone to sealing failure.

[0006] The utility model provides a combined cylinder gasket, a combined cylinder gasket comprising:

[0007] A cylinder gasket body, an air seal, and an oil-water seal, wherein the air seal and the oil-water seal are fixed on the cylinder gasket body, a plurality of cylinder holes are provided on the cylinder gasket body, the air seal is arranged around the cylinder hole, and is used to seal the gap between the cylinder hole and external parts, a plurality of bolt holes, water holes and oil holes are provided on the cylinder gasket body, the oil-water seal is fixed at the bolt holes, the water holes and the oil holes, and is used to seal the gap between the bolt holes, the water holes and the oil holes and external parts, the cylinder gasket body is a single-layer metal plate, the air seal is a multi-layer metal plate, and the oil-water seal is a rubber sealing ring.

[0008] Optionally, the air seal includes an upper contact layer and a lower contact layer, one end of the upper contact layer is fixed to the upper surface of the cylinder gasket body, and one end of the lower contact layer is fixed to the lower surface of the cylinder gasket body, the other end of the upper contact layer and the other end of the lower contact layer protrude relative to the upper and lower surfaces of the cylinder gasket body, respectively, and extend into the cylinder hole of the cylinder gasket.

[0009] Optionally, the air seal further includes a sealing layer, which is fixed to one end of the upper contact layer away from the cylinder gasket body and one end of the lower contact layer away from the cylinder gasket body to form a sealing edge for the upper contact layer and the lower contact layer.

[0010] Optionally, the airtight seal further includes an adjustment layer, wherein the adjustment layer is disposed between the upper contact layer and the lower contact layer, and the adjustment layer is used to adjust the sealing thickness.

[0011] Optionally, the airtight seal also includes an upper functional layer and a lower functional layer, the upper functional layer is fixed on the surface of the adjustment layer facing the upper contact layer, the upper functional layer is provided with pressure waves of various shapes to support the upper contact layer, and the lower functional layer is fixed on the surface of the adjustment layer facing the lower contact layer, the lower functional layer is provided with pressure waves of various shapes to support the lower contact layer.

[0012] Optionally, the thickness of the upper contact layer and the lower contact layer is smaller than the thickness of the cylinder gasket body, but the thickness of the upper contact layer and the lower contact layer is greater than the thickness of the upper functional layer and the lower functional layer.

[0013] Optionally, the thickness of the upper contact layer and the lower contact layer is 0.3 mm to 2.5 mm, and the thickness of the cylinder gasket body is 1 mm to 6 mm.

[0014] Optionally, the thickness of the upper functional layer and the lower functional layer is 0.1 mm to 2 mm.

[0015] Optionally, the oil-water seal comprises a fixed frame and a sealing rubber ring, one end of the fixed frame is fixed to the cylinder gasket body, and the sealing rubber ring is fixedly sleeved on the other end of the fixed frame.

[0016] Optionally, the fixed frame is made of metal material, and the sealing rubber ring is fixed to the fixed frame by vulcanization.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a combined cylinder gasket, which mainly includes a cylinder gasket body, an air seal, and an oil-water seal. The air seal and the oil-water seal are fixed on the cylinder gasket body. The cylinder gasket body is a single-layer metal plate, and the air seal is a multi-layer metal plate. A metal single-layer plate is used on the cylinder gasket body that is subjected to relatively small pressure and low heat, which can effectively reduce weight and production costs; while a multi-layer metal plate is used on the air seal that is subjected to relatively large pressure and high heat, which can enhance the strength of the air seal and prevent the air seal from breaking during use, resulting in sealing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the top view of the combined cylinder gasket in the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the gas seal;

[0022] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the oil-water seal;

[0023] Among them: 1-cylinder gasket body, 11-cylinder hole, 12-bolt hole, 13-water hole, 14-oil hole, 2-gas sealing member, 21-upper contact layer, 22-lower contact layer, 23-edge sealing layer, 24-adjustment layer, 25-upper functional layer, 26-lower functional layer, 3-oil-water sealing member, 31-fixed skeleton, 32-sealing rubber ring. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0025] The following description of at least one exemplary embodiment is in fact merely illustrative and is in no way intended to limit the present disclosure and its application or use. That is, the structures and methods herein are shown in an exemplary manner to illustrate different embodiments of the structures and methods in the present disclosure. However, those skilled in the art will appreciate that they merely illustrate exemplary ways of the present disclosure that can be implemented, rather than exhaustive ways. In addition, the drawings need not be drawn to scale, and some features may be enlarged to illustrate the details of specific components.

[0026] In addition, technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0028] like Figure 1 , Figure 2 as well as Figure 3 As shown, an embodiment of the utility model provides a combined cylinder gasket, which includes: a cylinder gasket body 1, an air seal 2, and an oil-water seal 3, wherein the air seal 2 and the oil-water seal 3 are fixed on the cylinder gasket body 1, a plurality of cylinder holes 11 are opened on the cylinder gasket body 1, the air seal 2 is arranged around the cylinder hole 11, and is used to seal the gap between the cylinder hole 11 and external parts, a plurality of bolt holes 12, water holes 13 and oil holes 14 are opened on the cylinder gasket body 1, the oil-water seal 3 is fixed at the bolt holes 12, the water holes 13 and the oil holes 14, and is used to seal the gap between the bolt holes 12, the water holes 13 and the oil holes 14 and external parts, the cylinder gasket body 1 is a single-layer metal plate, and the air seal 2 is a multi-layer metal plate.

[0029] The utility model comprises a cylinder gasket body 1, an air seal 2, and an oil-water seal 3. The air seal 2 and the oil-water seal 3 are fixed on the cylinder gasket body 1. The cylinder gasket body 1 is provided with a plurality of cylinder holes 11. The air seal 2 is arranged around the cylinder hole 11 and is used to seal the gap between the cylinder hole 11 and external parts. The cylinder gasket body 1 is provided with a plurality of bolt holes 12, water holes 13, and oil holes 14. The oil-water seal 3 is fixed at the bolt holes 12, the water holes 13, and the oil holes 14 and is used to seal the gap between the bolt holes 12, the water holes 13, and the oil holes 14 and external parts. The cylinder gasket body 1 is a single-layer metal plate, and the air seal 2 is a multi-layer metal plate. A metal single-layer plate is used on the cylinder gasket body 1 that is subjected to relatively small pressure and relatively low heat, which can effectively reduce weight and production cost; while the air seal 2 that is subjected to relatively large pressure and relatively high heat is used with a multi-layer metal plate, which can compensate for the separation gap caused by the explosion pressure and improve the sealing reliability.

[0030] Furthermore, the thickness of the cylinder gasket body 1 is 1 mm to 6 mm, and its specific thickness is determined according to the sealing clearance of the engine.

[0031] Further, the gas seal 2 includes an upper contact layer 21 and a lower contact layer 22, one end of the upper contact layer 21 is fixed to the upper surface of the cylinder gasket body 1, one end of the lower contact layer 22 is fixed to the lower surface of the cylinder gasket body 1, and the other end of the upper contact layer 21 and the other end of the lower contact layer 22 protrude relative to the upper and lower surfaces of the cylinder gasket body 1, respectively, and extend into the cylinder hole 11. The upper contact layer 21 and the lower contact layer 22 can enhance the pressure bearing capacity of the cylinder hole 11 and reduce the risk of fracture.

[0032] Furthermore, the gas seal 2 further includes an edge sealing layer 23, and the edge sealing layer 23 is fixed to one end of the upper contact layer 21 away from the cylinder gasket body 1 and one end of the lower contact layer 22 away from the cylinder gasket body 1. The upper contact layer 21 and the lower contact layer 22 are edge sealed so that the two are integrated to further enhance the pressure bearing capacity.

[0033] Furthermore, the gas seal 2 further comprises an adjustment layer 24, which is disposed between the upper contact layer 21 and the lower contact layer 22 to support the upper contact layer 21 and the lower contact layer 22. The thickness of the adjustment layer 24 is adjusted according to the sealing gap required by the cylinder, preferably 0 to 2 mm.

[0034] Furthermore, the airtight seal 2 also includes an upper functional layer 25 and a lower functional layer 26, the upper functional layer 25 is fixed on the surface of the adjustment layer 24 facing the upper contact layer 21, the upper functional layer 25 is bent into the same shape as the upper contact layer 21, and supports the upper contact layer 21, the lower functional layer 26 is fixed on the surface of the adjustment layer 24 facing the lower contact layer 22, the upper functional layer 25 is provided with pressure waves of various shapes, and supports the upper contact layer 21, the lower functional layer 26 is fixed on the surface of the adjustment layer 24 facing the lower contact layer 22, and the lower functional layer is provided with pressure waves of various shapes, and supports the lower contact layer 22.

[0035] Furthermore, the thickness of the upper contact layer 21 and the lower contact layer 22 is smaller than the thickness of the cylinder gasket body 1 , but the thickness of the upper contact layer 21 and the lower contact layer 22 is greater than the thickness of the upper functional layer 25 and the lower functional layer 26 .

[0036] Furthermore, the thickness of the upper contact layer 21 and the lower contact layer 22 is adjusted according to the sealing gap, and preferably the thickness is 0.3 mm to 2.5 mm.

[0037] Furthermore, the thickness of the upper functional layer 25 and the lower functional layer 26 is adjusted according to the sealing gap, and preferably the thickness is 0.1 mm to 2 mm.

[0038] Furthermore, the oil-water seal 3 includes a fixed frame 31 and a sealing rubber ring 32 . One end of the fixed frame 31 is fixed to the cylinder gasket body 1 , and the sealing rubber ring 32 is fixedly sleeved on the other end of the fixed frame 31 .

[0039] Furthermore, the fixed frame 31 is made of metal material.

[0040] Furthermore, the sealing rubber ring 32 is fixed to the fixed frame 31 by vulcanization.

[0041] The implementation process of the utility model is as follows:

[0042] The cylinder hole 11, the bolt hole 12, the water hole 13 and the oil hole 14 are processed on the cylinder gasket body 1 according to the hole positions in the cylinder, and the upper contact layer 21, the lower contact layer 22, the edge sealing layer 23, the adjustment layer 24, the upper functional layer 25 and the lower functional layer 26 of appropriate thickness are selected according to the expected sealing gap. The upper contact layer 21, the upper functional layer 25, the adjustment layer 24, the lower functional layer 26 and the lower contact layer 22 are stacked and pressed from top to bottom in this order, and one end of the upper contact layer 21 is fixed to the upper surface of the cylinder gasket body 1 by welding or riveting, and one end of the lower contact layer 22 is fixed to the cylinder gasket body 1 is fixed by welding or riveting, and then the edge sealing layer 23 is fixed to the end of the upper contact layer 21 away from the cylinder gasket body 1 and the end of the lower contact layer 22 away from the cylinder gasket body 1 by welding or riveting, so as to form edge sealing for the upper contact layer 21 and the lower contact layer 22; one end of the plurality of fixing frames 31 is fixed to the cylinder gasket body 1 at the bolt hole 12, the water hole 13 and the oil hole 14 respectively, and the sealing rubber ring 32 is sleeved on the other end of the fixing frame 31, and the sealing rubber ring 32 is fixed to the sealing rubber ring 32 by vulcanization, thereby obtaining the combined cylinder gasket provided by the utility model. When in use, the upper contact layer 21 and the lower contact layer 22 seal the cylinder hole 11, and the sealing rubber ring 32 seals the bolt hole 12, the water hole 13 and the oil hole 14.

[0043] The beneficial effects of the utility model are:

[0044] The utility model provides a combined cylinder gasket, which mainly includes a cylinder gasket body, an air seal, and an oil-water seal. The air seal and the oil-water seal are fixed on the cylinder gasket body. The cylinder gasket body is provided with a plurality of cylinder holes. The air seal is arranged around the cylinder hole to seal the gap between the cylinder hole and external parts. The cylinder gasket body is provided with a plurality of bolt holes, water holes, and oil holes. The oil-water seal is fixed at the bolt holes, the water holes, and the oil holes to seal the gap between the bolt holes, the water holes, and the oil holes and external parts. The cylinder gasket body is a single-layer metal plate, and the air seal is a multi-layer metal plate. A metal single-layer plate is used on the cylinder gasket body that is subjected to relatively small pressure and relatively low heat; the weight and production cost can be effectively reduced; while the air seal that is subjected to relatively large pressure and relatively high heat is used with a multi-layer metal plate, which can compensate for the separation gap caused by the explosion pressure and improve the sealing reliability.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A combined cylinder gasket, characterized in that: include: A cylinder gasket body, an air seal, and an oil-water seal, wherein the air seal and the oil-water seal are fixed on the cylinder gasket body, a plurality of cylinder holes are provided on the cylinder gasket body, the air seal is arranged around the cylinder hole, and is used to seal the gap between the cylinder hole and external parts, a plurality of bolt holes, water holes and oil holes are provided on the cylinder gasket body, the oil-water seal is fixed at the bolt holes, the water holes and the oil holes, and is used to seal the gap between the bolt holes, the water holes and the oil holes and external parts, the cylinder gasket body is a single-layer metal plate, the air seal is a multi-layer metal plate, the oil-water seal is a rubber sealing ring, and the thickness of the cylinder gasket body is 1 mm to 6 mm.

2. The combined cylinder gasket according to claim 1, characterized in that: The air seal includes an upper contact layer and a lower contact layer, one end of the upper contact layer is fixed to the upper surface of the cylinder gasket body, one end of the lower contact layer is fixed to the lower surface of the cylinder gasket body, the other end of the upper contact layer and the other end of the lower contact layer protrude relative to the upper and lower surfaces of the cylinder gasket body respectively, and extend into the cylinder hole of the cylinder gasket.

3. The combined cylinder gasket according to claim 2, characterized in that: The air seal further comprises an edge sealing layer, which is fixed to one end of the upper contact layer away from the cylinder gasket body and one end of the lower contact layer away from the cylinder gasket body to form an edge sealing for the upper contact layer and the lower contact layer.

4. The combined cylinder gasket according to claim 2, characterized in that: The airtight seal further comprises an adjustment layer, wherein the adjustment layer is disposed between the upper contact layer and the lower contact layer, and the adjustment layer is used to adjust the sealing thickness.

5. The combined cylinder gasket according to claim 4, characterized in that: The airtight seal also includes an upper functional layer and a lower functional layer. The upper functional layer is fixed on the surface of the adjustment layer facing the upper contact layer, and the upper functional layer is provided with pressure waves of various shapes to support the upper contact layer. The lower functional layer is fixed on the surface of the adjustment layer facing the lower contact layer, and the lower functional layer is provided with pressure waves of various shapes to support the lower contact layer.

6. The combined cylinder gasket according to claim 5, characterized in that: The thickness of the upper contact layer and the lower contact layer is smaller than the thickness of the cylinder gasket body, but the thickness of the upper contact layer and the lower contact layer is larger than the thickness of the upper functional layer and the lower functional layer.

7. The combined cylinder gasket according to claim 6, characterized in that: The thickness of the upper contact layer and the lower contact layer is 0.3 mm to 2.5 mm, and the thickness of the cylinder gasket body is 1 mm to 6 mm.

8. The combined cylinder gasket according to claim 6, characterized in that: The thickness of the upper functional layer and the lower functional layer is 0.1 mm to 2 mm.

9. The combined cylinder gasket according to claim 1, characterized in that: The oil-water seal comprises a fixed frame and a sealing rubber ring. One end of the fixed frame is fixed to the cylinder gasket body, and the sealing rubber ring is fixedly sleeved on the other end of the fixed frame.

10. The combined cylinder gasket according to claim 9, characterized in that: The fixed frame is made of metal material, and the sealing rubber ring is fixed to the fixed frame by vulcanization.

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